微型胶囊机器人外壳的淹没式空化射流成形质量分析  

Forming Quality Analysis of Submerged Cavitation Jet of Microcapsule Robot Shells

作　　者：李富柱[1] 陈世建 王匀[1] 何培瑜 朱聪 郭玉琴[1] LI Fuzhu;CHEN Shijian;WANG Yun;HE Peiyu;ZHU Cong;GUO Yuqin(School of Mechanical Engineering,Jiangsu University,Jiangsu Zhenjiang 212000,China)

机构地区：[1]江苏大学机械工程学院,江苏镇江212000

出　　处：《精密成形工程》2024年第6期201-208,共8页Journal of Netshape Forming Engineering

基　　金：装备预先研究领域基金(8092301201)。

摘　　要：目的针对微型胶囊机器人外壳成形的技术难题,提出了一种基于淹没式空化射流冲击箔材的微型机器人外壳成形方法,分析了微型外壳的成形质量。方法基于微型胶囊机器人外壳的特征尺寸设计模具,利用淹没式空化射流试验装置,完成了对T2铜箔的高能冲击成形试验,分析了淹没式空化射流的成形原理,讨论了微型外壳的成形深度、表面粗糙度、厚度减薄率以及纳米硬度。结果在空化射流冲击成形过程中,微型外壳成形深度的增长率随成形时间的延长而减小,最大成形深度可达291.4μm(模具最大深度为300μm);成形后微型外壳表面粗糙度Ra值由0.7897μm逐渐增加至1.0576μm,厚度减薄率为10%~25%,纳米硬度提高了21.78%~46.64%,最大硬度增长率出现在刃口处。结论在淹没式空化射流成形过程中,微型外壳的成形深度与模具的相当,微型外壳表面存在小幅度粗化现象,成形后减薄率降低,纳米硬度大幅提高,抵抗外界破坏能力提高。Aiming at the technical problem that the microcapsule robot shell is difficult to form,the work aims to propose a microrobot shell forming method based on submerged cavitation jet impacting foil and analyze the forming quality of the microcapsule robot shells.A mold was designed based on the characteristic dimensions of the microcapsule robot shell.The high-energy impact forming experiment of T2 copper foil was completed by a submerged cavitation jet experimental device.The forming principle of the submerged cavitation jet was analyzed,and the forming quality of the microform parts was discussed according to forming depth,profile surface roughness,thickness thinning rate,and nano-hardness.In the process of cavitation jet impact forming,the growth rate of the forming depth of the microshell decreased with the increase of the forming time,and the maximum forming depth could reach 291.4μm(the maximum depth of the mold was 300μm).After forming,the profile surface roughness Ra value of the microshell gradually increased from 0.7897μm to 1.0576μm,the thickness reduction rate was be-tween 10%and 25%,the nano-hardness increased by 21.7%-46.64%,and the maximum hardness growth rate appeared at the edge.In the process of submerged cavitation jet forming,the forming depth of the microshell is equivalent to that of the mold,and there is a small degree of roughening on the miniature shell surface.After forming,the thinning rate is reduced,the nano-hardness is greatly improved,and the ability to resist external damage is improved.

关 键 词：微型机器人 外壳 淹没式空化射流 塑性成形 成形质量 

分 类 号：TG394[金属学及工艺—金属压力加工]